1878 s die Roller Marks, thanks Ms.
Melior_Invenidiste
Posts: 123 ✭✭
https://youtube.com/shorts/ibggTcgMfDU?feature=share
https://youtube.com/shorts/l5tusUAEUWg?feature=share
Great color, light purple cameo
0
Comments
Lots of long, parallel lines and you flip it over and there’s more at the same angle as the other side - roller marks
Excellent. Thank you for the clarification.
I've heard of "planchet roller marks" but I've never heard of "die roller marks". Is there a difference?
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire
Yep... Looks like marks on planchet prior to striking.... Cheers, RickO
Nice example, IMO
I don't believe the lines in UNUM are roller marks. Not parallel and run in a diff direction than the other roller marks.
The marks are not on the die, so "die roller marks" is a misnomer. The marks are incused and parallel lines in the planchet prior to the strike. The question is, how did they get in the planchets.
One theory is that there are somehow raised lines on the rollers that leave incused lines in the planchet strip. Those would indeed be "roller marks," but I cannot think of any mechanical process that would raise up long parallel lines on the outsides of the rollers.
A more likely theory is that the planchet strips were first rolled down to almost the thickness of a finished blank, tapered at one end, and then the strip was placed on a drawing bench. THis consisted of a table to hold the strips, a solid steel block at one end with a gate in it the precise desired final thickness of the strop, and some mechanical devise to pull the pre-rolled strips through the gate. The tapered end was fed through the gate, the pulling device clamped down onto it, and the strip was pulled through the gate. This left the strip at a precise thickness from which you punched blanks of a precise diameter which mathematically gave you the volume and/or weight of the coin.
If the edges of the hole in the block of steel were to get a bit rough somehow from wear, damage, corrosion or whatever, any raised spot on the gate would leave a long incused scratch in the strip. With multiple flaws you get parallel lines.